Push over bar

ABSTRACT

A push over bar attachment for a crop harvester. The attachment comprises a U-shaped member having a pair of laterally spaced side legs and an intervening cross-bar. A novel bracket attachment for each leg to an adjacent side panel of the harvester. Each bracket has a pair of identical generally Zshaped elements clamping the associate side leg therebetween, a pair of bolts secure the brackets along one edge to each other and along an opposite edge there extend a pair of bolt and nut assemblies one of which is attached to an adjacent side panel of the harvester and provides a horizontal pivot to permit the attachment to swing vertically to adjusted positions and the other extends through an arcuate slot concentric with the axis of pivot and secures the bracket to the side panel to hold the attachment in selected adjusted positions.

United States Patent Scarnato et a1.

[ 1 June 27, 1972 [54] PUSH OVER BAR [73] Assignees InternationalHarvester Company,

Chicago, Ill. 221 Filed: Feb. 5, 1970 [21] Appl. No.: 9,020

521 11s. (:1. .Q ..56/1, 56/DlG. 1

3,013,601 l/l962 Griffinet al. ..56/ll9 Glass et al ..56/l4.4 5/1970Johnston et al ..56/D1G. 1

Primary Examiner--Antonio F. Guida Attorney-Floyd B. Harman [57]ABSTRACT A push over bar attachment for a crop harvester. The attachmentcomprises a U-shaped rnember having a pair of laterally spaced side legsand an interveningcross-bar. A novel bracket attachment for each leg toan adjacent side panel of the harvester. Each bracket has a pair ofidentical generally 2- shaped elements 4 clamping the associate side legtherebetween, a pair of bolts secure the brackets along one edge to eachother and along an opposite edge there extend a pair of bolt and nutassemblies one of which is attached to an adjacent side panel of theharvester and provides a horizontal pivot to permit the attachment toswing vertically to adjusted positions and the other extends through anarcuate slot concentric with the axis of pivot and secures the bracketto the side panel to hold the attachment in selected adjusted positions.

9 Claims, 32 Drawing Figures PATENTEDJum I972 SHEET III III:

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PATENTEDJum I972 sum 07 or 12 WNW PATENTEDJUNZ? 1872 3,672,132

SHEET 12 or 12 START/N6 PA m 0F HOLES \wao. INVE 1 K firm PUSH OVER BARDISCUSSION OF THE PRIOR ART In prior art assemblies the pushover bar isusually rigidly attached to the harvester. Furthermore such attachmentsare not adjustable both vertically and for and aft with a simple bracketadjustment which comprises reversely arranged complementary parts.

SUMMARY OF THE INVENTION Thisinvention is directed to a pushover barattachment for harvesters and more specifically to the novel means forat-' taching such bar to the harvester.

A general object of the invention is to provide a bracket assembly forclamping the legs of the bar structure to the harvester in a pluralityof positions vertically as well as forwardly or rearwardly with onecommon means.

A further object is to provide a bracket comprising a pair of identicalreversely arranged parts which form a pocket therebetween to receive aleg of the bar assembly and wherein these parts provide a rigid abutmentalong one edge with the harvester side panel and along another edge arespaced for accessibility to loosen and tighten bolts holding the partsin clamping position.

Another object is to provide a simple device for mounting the barassembly to theharvester and wherein the parts are in additionto beingclamped to the side panel are clamped against the leg of the barassembly by the same bolt which also provides a horizontal pivot for thebar assembly from the harvester.

A still further object is to provide for a pushover bar a mountingcomprising only one part structure, such structure being utilized inpairs of reversely arranged parts.

These and other objects and advantages inherent in the invention willbecome more apparent from the specification and the drawings wherein:

FIG. 1 is a broken-apart top plan view of the mower conditioner withparts removed to better illustrate the inventions;

FIG. 2 is a sectional view taken substantially on the line 2- 2 of FIG.1 illustrating the structure in an operating position;

FIG. 3 is a view comparable to FIG. 2 showing the parts in an otherposition;

FIG. 4 is a view comparable to FIGS. 2 and 3 showing the parts inelevated or transport position;

FIG. 5 is a sectional view taken substantially on the line 5- 5 of FIG.1;

FIG. 6 is an enlarged sectional view taken substantially on the line 6-6of FIG. 1;

FIG. 7 is a rear perspective view of the mower conditioner;

FIG. 8 is a fragmentary side elevational view taken substantially on theline 88 of FIG. 1;

FIG. 9 is a fragmentary view similar to FIG. 8 showing the parts in adifferent position;

FIG. 10 is a broken-apart top plan view of the frame structure;

FIG. 11 is an end view taken substantially on the line 11- 1 1 of FIG.10;

FIG. 12 is a fragmentary rear view taken substantially on the line 12-12ofFIG. 10;

FIG. 13 is a side elevational view of the framework;

FIG. 14 is an enlarged sectional view taken substantially on the line14-14 of FIG. 13;

FIG. 15 is an enlarged sectional view taken substantially on the line15-15 ofFIG. 14;

FIG. 16 is a sectional view taken substantially on the line 16-16 ofFIG.15;

FIG. 17 is a fragmentary plan view of a portion of the lifting linkagetaken substantially on the line 17-17 of FIG. 8;

FIG. 18 is a transverse vertical sectional view taken substantially onthe line 18-18 of FIG. 1;

FIG. 19 is a view comparable to FIG. 17 with parts broken away showing adifferent position of the parts;

FIG. 20 is a further view comparable to FIGS. 18 and 19 showing theparts in a still further position;

FIG. 21 is a fragmentary side elevational view of the breakover barstructure and divider;

FIG. 21A is a sectional view taken substantially on line 21A-21A of FIG.2.

FIG. 22 is a fragmentary top plan view taken substantially on the line22-22 of FIG. 21;

FIG. 23 is a plan view of the harvester with part of the structure shownin phantom lines and illustrating the connection of the unit to atractor;

FIG. 24 is an enlarged sectional view of one form of bumper guard takensubstantially on the line 24-24 of FIG. 23;

FIG. 25 is a view comparable to FIG. 24 showing a modification of thebumper guard structure;

FIG. 26 is an enlarged sectional view taken substantially on the line26-26 of FIG. 13 showing the latching mechanism for the tongue;

FIG. 27 is a broken apart top fragmentary view of the reel;

FIG. 28 is a sectional view taken substantially on the line 28-28 ofFIG. 27;

FIG. 29 illustrates on a smaller scale the position of the reel bats forconverting the reel from a four bat to a five bat;

FIG. 30 shows the arrangement of mounting of the reel tine bars to a sixfinger reel; and

FIG. 31 is a side view of a reel plate showing the geometry of the holespacings.

. Having particular reference to the drawings there is shown a mowerconditioner or harvesting machine generally designated 2 which comprisesa framework generally designated 3 which comprises a fore and aftextending box section draft element 5 which at its rear end isintegrally connected with an upstanding end frame structure 6 (FIGS. 5,10 and 13). The end frame structure 6 is connected at its upper end to atransverse tapered beam member 7. The members 5, 6, and 7 are disposedin x, y, and z planes and the member 5 comprises top and bottom walls 8and 9 and inboard and outboard walls or members 10 and 11 (FIG. 10). Theforward end portion 12 of the draft member 5 is widened and flaresforwardly to provide a pocket 13 for the rear end portion 14 of a tonguemember 15. The rear end of the tongue member 15 is pivoted on asubstantially vertical axis by means of a pin 16 which is connected tothe top and bottom walls of the box section member 5.

The end or side frame structure 6 comprises inboard and outboard platesor walls or frame members 18 and 19 which flank the inboard and outboardwalls 10 and I l of the member 5. The wall 19 is integrally connected tothe outer side of the wall 11 adjacent to its rear end as by welding andthe inboard wall is connected at its forward end to a vertical anchormember or standard 20 (FIGS. 8 and 13) which in turn is connected as bywelding to the inboard wall 10. The frame members 18 and 19 areinterconnected intermediate their ends by means of a vertical wall 22(FIGS. 5 and 13) which also connect as by welding to the rear end of themember 5. The inboard and outboard walls 18 and 19 are alsointerconnected forwardly of the wall 22 by means of a substantiallyhorizontal gear-box mounting plate 23 which has its rear edges connectedto the forward side of the wall 22 and its lateral edges are connectedas by welding to the inner sides of the walls 18 and 19 and the plate 23serving as a support for a gear box 25 as best seen in FIGS. 1 and 5.The forward end of the mounting plate 23 is provided with a dependingwall 26 (FIG. 13) which at one portion terminates at and connects withthe top wall 8 and has a portion at the inboard side of the wall 10 andextends downwardly between the member 10 and the inboard side 26' of thevertical wall or web 18 (FIG. 10) and connects therewith. Web 19 tapersupwardly and at its narrow upper end connects with the adjacent end 28of the box section beam 7. The lower ends of the webs 18 and I9rearwardly of the web 22 are interconnected by a bottom plate or wall 29which with the inboard and outboard plates and the wall 22 form anenclosure 30 which serves as a tool box. An access opening 31 is definedby a peripheral wall 32 which integrally connected with the inboard andoutboard walls 18 and 19 between which wall 32 extends. A cover 33 ishinged at 34 to the rear wall of the member 7 and a latch 36 is providedon the lower edge of the cover which cooperates with the lower portion37 of the peripheral wall 32 for maintaining the box closed. A spindle37' is weld-connected to the wall 29 as well as to the adjacent lowerportion 37 of the wall 32 and projects through an aperture in theinboard wall 18 and extends inboardly thereof and journals a wheel 39. Atapered gusset plate 40 is integrally connected at its rear edge to theforward wall 41 of the member 7 and the forward end of the plate 40 isconnected to the standard 20. This plate serves to mount an anchor 42(FIG. 13) which pivotally supports as at 43 (FIG. 10) the rear end of apower shaft shield 44, as best seen in FIG. 10.

The transverse beam member 7 in addition to the rear wall 35 and theforward wall 41 has top and bottom walls 45 and 46 which form theaforementioned box section for purposes hereinafter described. Hangerelements 47, 48 and 49, having their upper ends connected to the bottomside of the wall 46, extends downwardly from the member 7 and forwardlythereof and at their lower ends are respectfully provided with U-shapedjaws 50, 51, and 52 which provide a coaxial mounting for the stub shafts53 and 54 (FIGS. 1 and 5) at the rear ends of side frame members 55 and56 of the header generally designated 57.

The header 57 comprises an upwardly and rearwardly sloping platform 58elongated transversely of the unit and integrally connected at itslateral edges to the side members 55 and 56 which at their upper forwardends are provided with outturned flanges 59 and 60 which serve assupports for bearing blocks 61 and 62 (FIG. 1) suitably connectedthereto as by bolts, said blocks mounting the shaft 64 of a reelgenerally designated 65 for rotation about a substantially horizontalaxis extending transversely in the direction of movement of the unit.

The reel comprises as best seen in FIGS. 27 through 31, dished centerand end plates 68, 69, and which are of identical construction. Thecenter plate is loosely mounted about the thick center portion 71 of theshaft 64 and the end plates 69 and 70 are welded as at 72 and 73 to thecenter portion 71 of the shaft 64. As best seen in FIG. 27 only one tinebar assembly generally designated 74 is shown mounted on the peripheriesof the plates 68 through 70 and a four bar structure is shown in FIG.28. The mounting of the tine bar 74 to the mounting plates isaccomplished by three identical brackets 75, 76 and 77 each of which isa generally triangular structure in side elevation and comprises atopposite ends of its inner edge 78 a pair of bolt holes 79, 79 forreception of bolts 80, 80 therethrough for securing the same in pairs ofopenings AA, BB or CC which are arranged about the peripheries of themounting plates so as to provide a mounting for four, five or six bats.FIG. 31 shows the geometry of the position of the various holes toaccomplish the multiple tine bar mounting with a minimum of holes.

Each bar comprises a tubular shaft 81 which extends through bearings 82in the brackets 75, 76, 77 and locking collars 83, 84 (FIG. 27) aresleeved over opposite ends of the shaft 81 and are locked thereto as byset screws 85, 86 to prevent endwise movement of the shaft 81. An arm 87is provided on one end of each shaft 81 carrying a roller 88 whichtracks within a cam track 89 which is carried on a mounting plate 90suitably secured as by bolts 91, 91 (FIG. 27) to the adjacent panel 55.Bar 81 carries a plurality of sets of tines or spring fingers 92 securedthereto as by bolts 93 all of the fingers only two on each bar beingpositioned in a common plane and their position with reference to theaxis of rotation is governed by the cam track guiding the crank arm 57.Thus on the forward sides of the reel as seen in FIG. 28 the fingers aregenerally radial and in the lower portion of the reel they are alsosomewhat radial. However they recede back on the back side of the reeland on top side of the reel and then in moving to a radial position.Each finger bar assembly comprises a bat 95 forwardly of the respectiveset of fingers 92 in the direction of rotation of the reel as shown bythe arrow in FIG. 28 and each bat comprises a flat plate member 96 ofsubstantial width and extending the full length of the reel and havingroll sections 97 and 98 along its longitudinal edges to provide anenlarged arcuate surface area to prevent hairpinning of crops thereon.The plate 96 seats against a flange 99 of each bracket 75, 76, 77 andthese brackets provide external seating surfaces for the plate 96 whichis generally tangential to the peripheral edges 100 of the mountingplates.

Thus as the crops are being swept by the reel rotating on its forwardside downwardly and under, the fingers comb through the crops and thebats or slats 95 hold the material against the upper surface 101 of thedeck 58 after the crops have been cut by the reciprocating sickle 102 ofthe mower 103 which is mounted on the forward edge of the platform 58.The crops are swept upwardly and rearwardly into the nip 104 developedbetween upper and lower hay conditioning rollers 105 and 106.

The lower roller comprises a center shaft 107 which at opposite ends ismounted in bearings 108 and 109 secured to the side members 55 and 56and is rotatable on a substantially horizontal axis. The upper roller105 has a ribbed body portion 110 and a center shaft 111 which atopposite ends is mounted in bearings 112 and 113 in triangularly shapedidentical lever elements 114 and 115. The front apical ends 116 and 117of the lever members 114 and are coaxially pivoted by transversehorizontal pins 1 l8 and 1 19 to standards 120 and 121 which areintegral with the side members 55 and 56 respectively and form partthereof. The bottom flanged edge 122 (FIGS. 3 and 4) of each levermember 114 and 115 is abutable adjacent to the rear end of the levermember with a stop block 124 which is provided on the outwardly flangedupper edge portion 125 of the respective side members 55 and 56. Thusthe position of the periphery of the upper roller 105 is controlled withrespect to the periphery of the roller 106 so that the two rollerseither engage each other or are minutely spaced from each other on theorder of one sixty-fourth to one thirty-second of an inch.

The upper rear apices 126 and 127 of the lever members 114, 115 arecoaxially pivoted by means of pins 128 and 129 to the forward upper endsof lifting straps 130 and 131 which slope downwardly and rearwardly.Straps 130 and 131 are provided in their rear lower end portions withhorizontal pin 134 therethrough mounted on an associated dependentbracket 135 (FIGS. 3 and 4) which at their upper ends are secured to theunderside of wall or frame member 46 of the member 7. It will beunderstood that a bracket 135 is provided for each set of straps 130 and131 and that straps 130, 131 are of identical structure and theirmountings are identical. Each lever is provided at its upper rear apexwith a fixed anchor structure 137 to which is adjustably secured by anut and bolt assembly 138 (FIG. 2) the upper end of a tension spring 139and lower end of the spring being hooked to a pin 140 which is securedon the bottom flange structure 141 of the header. Thus the springs urgethe respective lever members downwardly as viewed in FIG. 2 and theupper roller is thus brought into cooperative relationship with thelower roller as heretofore described.

FIGS. 2, 3, and 4 illustrate various positions of the header FIG. 2being in lowered operating position, FIG. 3 being in the intermediateposition and FIG. 4 being an elevated transport position or rollseparating position.

The position of the header is detennined by a lifting and loweringlinkage generally designated and it will be observed that in thepositions of FIGS. 2 and 3 pins 134 are disposed intermediate the endsof the slots 133 whereas in FIG. 4, the elevated position, the pins 134engage the upper edges 151 of the slot 133. This is the limit of upwardoperating adjustment before roll separation. Further upward movementutilizes the members 130 as struts or compression links whereby as theunit is being pivoted about the axis of the pins 53, 54 after theengagement between the edges 151 and the pins 134, the links 130 causethe lever members 114 and 115 to rotate in a counterclockwise direction,as viewed in FIG. 3,

by swinging about the pins 118 and 119. The upper roller is separatedfrom the lower roll in which position the rollers which are rotating asshown by arrows in FIG. 4 will clear any slug of material which may haveentered in between the rollers.

The lifting and lowering linkage 150 is assisted by a pair of counterbalancing tension springs 175, 176 which at their forward ends arepivotally connected as at 177 and 178 to the upper ends of anchor arms179 and 180 which are connected to the side panels 56, 55 and project toa point directly above the reel. The rear ends of the springs areconnected to anchors 182 and 183 which are secured to top wall 45 of themember 7 in alignment with the respective anchor arms 179 and 180. Thelifting linkage comprises a pair of lifting straps 185 and 186 which attheir forward ends are connected coaxially by means of pins 187 and 188to the extensions 120 and 121 of the side members 55 and 56. Thesestraps 185 and 186 extend diagonally upwardly and rearwardly and attheir rear extremities191, 192, (FIGS. 3 and 7) are provided withelongated slots 193 and 194 which receive coaxial pins 196 and 197 whichare mounted on the outer ends of arms 198-, 199 said arms being intransverse alignment and at their other ends being secured to arockshaft 200 which is pivoted about its substantially horizontal axisin a pair of saddle brackets 201 and 202 secured to the top wall 45 ofthe member 7 One end of the rockshaft 200 is provided with an operatinglever assembly comprising a pair of laterally spaced identical levermembers 205 (FIGS. 17-20) which are fixedly connected at their innerends to the rockshaft 200 and embrace a swing link 206 which is pivotedat its inner end as at 207 on the rockshaft 200 whereby the swing link206 is swingable freely on the rockshaft via the bearing 208. The backedge 209 of the swing link 206 serves as an abutment engaging a stop 210which is in the space between the members 205 and is rigidly securedthereto as by welding.

Reference is made to FIGS. 17 through and 8 and 9, wherein the swinglink 206 as best seen in FIG. 18 is shown movable away from the lever205, in order to accommodate withdrawal of the pin 211 from the pivotaperture 212 in the swing link 206 and the clevis end of a piston rod213 which operates within cylinder 214 of a hydraulic ram generallydesignated 215 upon collapse of the ram. The ram 215 is anchored as at216 to the upstanding anchor standard 20.

It will be seen that the lever structure 205 is provided with atransverse slot 219 which is elongated along the cord of the arc ofrotation of the lever assembly 205 about the axis of the rockshaft 200.The slot 219 aligns transversely with vertically elongated slot 220formed in the anchor bracket 222 and more specifically in the portions223 and 224 of the U-shaped member 222. It will be understood that thelongitudinal extent of each slot is greater than the maximum operatingextent of the ram. Therefore the locking pin 225, which in lockingposition, that is holding the header unit in transport position, as seenin FIG. 4, by extending through slots 219 and 220 locks the leverassembly 205 and the anchor structure 222 will not prevent extension ofthe ram so that actuation or extension of the ram after the parts arelocked will not cause the parts to break because the pin is interfering.The pin 225 is shown in FIG. 18 in locking position wherein the pinengages the edge 226 of the slot 219 and the upper edge 227 of the slotstructure 220. It will be seen that the actuation of the ram to move theswing link 206 will not cause the parts to be broken since there issufficient slot portion or lost motion in the slot 219 as well as inslot 220 to accommodate further movement in a clockwise header liftingdirection as seen in FIG. 18. Since the link 206 is free to swing awayfrom the lever assembly 205 in a counterclockwise direction no load isimposed upon the parts due to retraction of the ram when the pin is inlocking position (FIG. 18). The pin 225 and the length of the slots isso arranged that pin 225 is storable when not in use for locking (FIG.18) either in the slot 219 orin the slot 220 (FIG. 19). As seen in FIG.20 the maximum movement of the lever 205 corresponding to maximumextension of the ram does not bottom the pin 225 between the edge 228 ofthe slot 219 and the upper edge 229 of the bracket 222 and if the pin225 is stored in the lower end of the slot 220 the edge 230 of the lever205 will not move far enough to engage the top of the pin which isresting at the bottom edge 231 of the slot 220. Thus no matter where thepin is positioned the slots are so arranged and their length is sointerrelated that in no position will the parts become rigidly lockedsuch as would cause the parts to break because of extension of the ram.

It will also be seen that leg 223 of the bracket 222 serves as a bracefor a Ushaped saddle 232 which is coaxial with the other saddle brackets201 and 202 and provides a support for the adjacent end of the rockshaft200. The locked position of the lifting linkage is shown in FIG. 4wherein the pin 225 is in the position shown in an enlarged view in FIG.18. With this linkage locked, the ram may be easily disconnected andused elsewhere.

Referring now to FIGS. 1, 2, 21 and 22 and 27 there is shown a breakoverbar assembly generally designated 250. Said bar is U-shaped in top planview and comprises a transverse front member 251 and a pair ofrearwardly extending laterally spaced legs 252, 253. These legs arecarried by brackets 254 from the side members 55 and 56, each brackethaving a pair of counterpart elements 257, 257 (FIG. 21A) of identicalconstruction but reversely arranged and are interconnected by means ofbolts 258 at their upper edges, said bolts being drawn up to clamp theassociated 252 or 253 leg therebetween and adapted to be loosened inorder to allow the leg and the entire break-over bar structure to bepulled up or down as seen in phantom lines in FIG. 21 in order to adjustits position with reference to the crop which is being harvested. Inaddition the bracket structure 254 is connected by means of a bolt 260adjacent its lower rear comer through opening 261 (FIG. 21A) to theadjacent side sheet member 55 or 56. The lower forward comer of thebracket structure is provided with an opening in the members 257 toadmit a bolt 263 therethrough, said bolt 263 extending through thearcuate slot 264 in the related side sheet 55 or 56, the slot 264 beingconcentric with the axis of pivot of the entire assembly including thebreakover bar and the bracket structure 254 about the axis of the bolts260. The bolt 263 is loosened in order to accommodate upward anddownward tilting of the entire breakover bar assembly 250 and when thebar is positioned in the desired position the bolts 260 and 263 aretightened thereby clamping the clamp 254 against the related side sheet.In addition to the breakover bar being movable vertically about the axis260, the cropward side of the breakover bar is provided with a noveldivider 270 which comprises a pair of forwardly converging outboard andinboard elements 271 and 272 which merge into an apex 273, the member272 preferably being in the form of a pipe and having a flattenedforward end 274 which extends in a forward direction generally parallelto the operational movement of the unit. End 274 defines a point and isin alignment with the element 272 which is weld-connected at its forwardend as at 275 behind the crimped portion 276 of the element 272. Therear end of the member 271 is continued as an arcuate bend 277 andcontinues as a diagonal brace 278 which at its rear end 279 abuts as at289 against the forward end of the leg 252 in the area of its juncturewith the cross member 251. The element 271 is preferably a flat strapand is positioned outwardly of the outer surface 281 of the leg 252 andprovides a guide for crops passing therealong. Element 271 is ofresilient material such as steel and develops a spring bias toward thearea 280 for holding the part in close association or Contact with thesurface 281. The forward end of the brace 278 extends diagonallyforwardly to an intermediate portion of the leg 272 and isweld-connected as at 284 to said leg 272. Thus a strong assembly isobtained and the structure is such as will prevent hairpinning ofmaterial around the back edge of the guide strap 271 and the leg 272will gently sweep the material toward the center of the cross bar 251.The inner end or rear end of the leg 272 is flattened to provide anarcuate contour at 285 (FIG. 22) for complementary engagement with theforward side 286 of the member 251. The leg 270 has a laterally bentrear end portion 288 which is weld-connected to a U-shaped clamp 289.The clamp 289 having upper and lower-jaws 290 and 291 which areconnected by a pair of bolts 292. Bolts 292 are adapted to be loosenedto permit the divider to be adjusted about the axis of the member 251 upor down and then the bolts 292 are tightened to clamp the dividerassembly tightly to the breakover bar structure. Thus in the breakoverbar structure the e entire assembly is vertically pivotal and thedivider 270 will swing about the bar 251 so that the divider may bepositioned in proper attitude with respect to the crop and the breakoverbar in positioned at the proper height to the crop and also in properrelationship to the reel which is positioned therebehind.

The position of the harvesting unit and the break-over bar and thedivider in relation to the operating tractor generally designated 300 isshown in FIG. 23. The tractor is pivotally connected at 302 to theforward end of a tongue as best seen in FIG. 10. A vertical pivot isestablished at 302 wherein lateral pivotal movement is obtained betweenthe tongue and the tractor for steering purposes. It has been found thatif such steering movement is beyond a predetermined extent, the rearwheels 306 will engage with and crush or destroy the power takeoffshield 307 (FIG. 13) which is supported by the straps 308 in normalmanner from the tongue and by means of sup port 42 from the side frameelement 40. In order to safeguard against this occurrence a novel bumperguard designated 310 (FIGS. 24 and is provided on the tongue 15 which isof box-section having top and bottom walls 311 and 312 and side walls313 and 314. The bumper guard as shown in FIG. 24 is fusiform incross-section and comprises a pair of apical bumper structures 315 and316 at opposite ends and that is at opposite sides of the tongue. Thestructure 315 comprises outwardly converging top and-bottom webs 317 and318 which merge into an apex 319 and the structure 316 is provided withoutwardly converging top and bottom webs 320 and 321 which merge into anapex 322 and the apices 319 and 322 are spaced at substantial distancefrom the walls 314 and 313. The walls 317 and 320 merge into a top wall324 of the body portion of the unit and the webs 318 and 321 merge intothe lower horizontal webs 325 and 326. The top wall 324 seats on top ofthe wall 311 of the tongue and the bottom webs 325 and 326 engage theunderside of the bottom wall 312. The unit is clamped to the tongue bymeans of a pair of bolt and nut assemblies 327 and 328. The nut and boltassembly 327 is spaced closely to the web 314 and interconnects thewalls 324, 325 and tightens them against the top and bottom sides of thetongue. Similarly the bolt 328 which is closely spaced to the web 313 ofthe tongue interconnects the top and bottom portions 324, 326. Theplacement of these bolts 327 and 328 close to the exterior sides of thewebs 314 and 313, serves as means to prevent shifting of the bumperguard unit 310 transversely of the tongue. At the same time by looseningthe bolts the bumper guard may be shifted longitudinally of the tonguein accordance with the position where the tire or the wheel wouldnormally swing or in accordance with its arc of swing which is dependentupon the position of the wheels from the axle. These wheels are eitheradjustable on the tractor axle. The adjustment of the bumper lengthwiseof the tongue also accommodates different tractors and their particularwheel spacings. Thus a novel bumper guard is provided with novel apicalends which prevent the lugs of the tires from hanging up on the guard.As the tractor is moving forwardly the wheel will slide on the diagonalunder surface 330 of the web 318 or 331 of the web 321 and if thetractor wheel is moving rearwardly it will slide over the upper surface332 of web 317 or 333 of web 320 depending on the turn of the turningmovement of the tractor. The relationship of the wheels with respect tothe bumper guard is adequately shown in FIG. 23 wherein it will be seenthat the guard 310 will be positioned in one position with the wheelshown in solid lines an in another position rearwardly with the wheelsextended or in a different tractor with different wheel spacings isused.

A bumper guard generally designated 350 of modified construction isshown in FIG. 25 wherein it will be seen that the right and left handparts designated 351, 351 are of identical construction but are turnedupside down with respect to one another. Each section 351 comprises apair of outwardly converging webs 352, 353 which merge into apices 354.The web 353 extended into an obtusely arranged mounting portion or plate355 and web 354 is similarly extended into a short width mountingextension or projection 356. Thus it will be seen in FIG. 25 that thetwo sections 351 are telescoped one within the other and as seen in FIG.25 the rightward section 351 has the web 355 overlying the wall 311 andis underposed with respect to the extension 356 of the leftward member351 and that the leftward member has its wall section 355 underposedwith respect to the bottom wall 312 of the tongue and overlies theextension 356 of the element 351. In each instance the bolts 328 and 327interconnect the portions 356 and 355 to each other and clamp theportions 355 against the top and bottom walls 311 and 312 ofthe tongue15.

Again referring to FIG. 23 it will be seen that the tractor 300 isprovided with a suitable power takeoff device 375 which drives a powershaft 376 which intum drives an angle gear train in a gear case 377mounted upon the seating wall 23 and secured thereto as by bolts 378.The gear box has a lateral flanged extension which in turn is bolted tothe vertical side web 18, the web 18 being provided with an aperture 379through which extends an extension 380 which journals the input shaft381 which drives a plural sheave or pulley 382 at its inner end. Pulley382 in turn drives a complementary belt 383. The belt is suitably loadedby a tightening idler (not shown) and being trained about a pulley orsheave assembly 384 of a countershaft assembly. The pulley structure 384is part of a bell-shaped structure and is mounted on a shaft 385 whichis suitably joumaled in a bearing 386 which is connected to a securingbrace 387 which is integral with the member 23, wall 22 and web 26. Theshaft 385 is coaxial with the member 23, wall 22 and web 26. The shaft385 is coaxial with the stub shafts 53, 54. Shaft 381 is mounted in ajournal bearing structure 389 which is connected to the inboard web 18by means of bolts 390 see FIG. 5. The bell-shaped structure 384comprising the pulley 384 and driven by the belt 383, is formed with anaxially offset pulley 388 which drives a belt 389, belt 389 beingtrained about a pulley 390 of a wobble drive generally designated 391which is essentially that shown in U.S. Pat. No. 2,824,416, and thepulley 390 through the input shaft 392 of the wobble drive drives anoscillating arm 393 which in turn is connected to the sickle structure394 thereby operating the mower or the cutting mechanism heretoforegenerally designated 102.

The pulley housing 384 drives a sprocket 400 through a one-way oroverruning clutch 401, the sprocket 400 having a chain 402 trainedthereabout. The upper run 403 of the chain being trained under a chaintightener idler 404 which is carried on a standard 405 (FIG. 2)pivotally connected to its upper end as at 406 to the lug 137 on thelever member 126. Thus the idler pulley 404 moves up and down with thelever member 126 attendant to opening and closing of the upper roll asheretofore described without in any way interrupting the drive.Intermediate its ends, the standard 405 is adjustably connected at 407to one end of a tension spring 408 which at its other end is connectedat 409 to the stationary standard of the side member 55. The upper run403 of the chain 402 trained over a sprocket 410 connected (as best seenin FIG. 6) through an overruning clutch 411 to the shaft 111 of theupper roller 105. The upper run of the chain is trained over a sprocket414 which is joumaled or rotatably mounted on a countershaft 415suitably secured to the side member 55. The chain is wrapped around thesprocket 414 and emerges as a lower run 416 which is trained over asprocket 417 mounted on the shaft 107 of the lower roller 106. Then thelower run of the chain continues under the sprocket 400 and completesthe chain length. It will be observed that upon tennination of drive tothe sprocket 400 the upper roller will rotate freely in view of theoverrunning clutch connection 411 and since the roller 406 is at thereturn end of the chain its rotation will impose a desired tension loadon the entire chain and not destructive compression loads as if theupper roller drove the chain. The sprocket 414 is connected to a pulley419 about which is wrapped a reel driving belt 420, the top run 421 ofthe belt 420 being wrapped under an idler pulley 422 which is suitablymounted on a bell crank lever 423 at one end thereof. The lever 423 ispivoted as at 424 and has its other end 425 connected to a bolt and nutadjusting means 426 which is connected between theleg 425 and a fixedanchor 426 mounted on the adjacent side panel 55. The upper run 421 ofthe belt is continued over a large pulley 427 and returns with its lowerrun 428 under the pulley and wraps around the underside of the pulley419.

It will be observed that the drive thus is from the power takeoffdirectly to the rollers and that through a countershaft a novel drive isobtained to the reel.

Referring now to FIGS. 23 and 26 particularly it will be observed thatthe unit 1 is positionable between an operating positionlaterally'offset with respect to the tractor and a transport positionwherein the unit is substantially tucked behind the tractor in order toreduce the overall width of the machine in transport over the roads orthrough narrow gates. It will be noted particularly in FIG. as well asin FIGS. 23 and 26 that the tongue member swings about the axis 16whereby the angular relationship between the harvesting unit and thetongue is changeable. The rear end of the tongue supports a bolt lockingassembly generally designated 500 which incorporates a bolt 501 slidablymounted in substantially horizontal apertures 502 and 503 in a pair ofupstanding lugs 504 and 505 connected to the top wall 311 of the tongue15. The bolt is spring loaded or biased to locking position for entryinto any of the series of selected openings 507 in an arcuate wall 508on the forward end of the draft structure 12. A spring 510 is sleevedover the bolt 501 and one end seats against the seat or washer 511secured as by a pin 512 to the bolt 501 and at the other end the springseats against the surface 513 of the lug 505. Thereby the springcontinuously urges the bolt into locking position. An operating assembly55 is provided for withdrawing and holding the bolt out of engagementwith any of the apertures 507, said assembly comprising a laterallyextending lever element 516 which intermediate its ends is pivoted on asubstantially vertical axis as at 517 by means of a pin to the upper endto the forward end of the bolt forwardly of the lug 505. The one end 518of the lever has a roller 519 rotatably mounted thereon. The roller 519is joumalled about a vertical axis and has engagement with the forwardside 519' of the lug 505. The opposite end 520 of the lever 516 isconnected to the rear end of an operating member in the nature of a rope521 which is adapted at its other or forward end to be secured close tothe operator as to the seat of the tractor for easy access by theoperator. It will be observed that the rear edge 522 of the lever is cutdiagonally in converging relationship to the forward side 519' of theupright lug 505 which insure that the lever does not bind against thefront side of the lug in the extended position of the spring. Theoperator is wanting to swing the tongue 15 from the position shown inFIG. 10 in solid lines to the position shown in dotted lines wouldunlatch the tongue from the draft frame 12 by pulling on the cable orrope 512 to withdrawn the pin 501 from the respective opening 507 andthen while holding this cable taut he would turn and advance the tractorto the left as seen in FIG. 10 thereby positioning the tongue in thedotted line position. The operator then would release the rope and thebolt would then enter into the adjacent pin opening 507. If the operatorwished to change the position from that shown in dotted lines to any ofthe positions intermediate or to the position shown in solid lines inFIG. 10 he would again pull the rope and then would turn the tractor tothe right until and thereby swinging the tongue 15 from the positionshown in dotted lines to the position shown in solid lines. This samerelationship is shown in FIG. 23.

Referring now to FIG. 7 it will be observed that the transverse beammember 7 as more particularly seen in FIG. 10 has a plurality ofrearward mounting brackets 525 attached thereto upon which is mounted atop deflector shield 526 secured thereto and underneath this deflectorshield there are positioned a pair of laterally adjustable windrowingshields 527 and 528 which are swingable about hinge connections 529 and530 suitably secured to the member 7.

It will be noted that in addition to the leftward wheel 39 there is arightward wheel mount 550 which support the wheel 552 on a spindle 553.extending therefrom. And in essence the construction of the member 550is similar to the construction of the portion of the side framestructure 6 at the inner end of the beam 7.

Referring now to FIGS. 14, 15 and 16 it will be seen that the walls 35,41, 45 and 46 of beam 7 as best seen in FIG. 4 form a compartmentdesignated 600 which has an open end at 601 at the narrow end of thebeam in communication with an opening 602 in the side element 56 foraccommodating insertion and withdrawal of spare sickle 603. The innerend 604 of the compartment is terminated by a diagonal transverse wall605 which provides a converging area 606. between the surfaces 607 and608 of the members 605 and 41 in order to position the sickle close tothe interior surface 608 to prevent excessive rattling and bouncing ofsickle member. The widening of the compartment 600 toward the inner endthereof facilitates insertion of the sickle into the compartment withoutthe necessity of being extremely careful not to damage the sharp edgesickle sections 610 and 61 1.

The opening 602 is provided with a cover 612 which is preferably a flatplate member biased against the exterior side 613 of the plate or sidemember 56 by means of a pivot nut and bolt assembly 614 and acompression spring 615, the spring arranged to draw the bolt 614 towardthe plate 612 and the plate 612 toward the surface 613 which will beapparent from FIG. 15. Upper and lower edges of the plate 612 are angledoutwardly at 616 and 617 to permit coating of the cover plate and theportion 617 being of substantial extent and providing a hand hold formanipulation by the operator between closed and open positions. Theplate 612 is provided with upset lugs or embossments 619 and 620 alongits lateral edges which fit into the opening 602 against the side edges621 and 622 of the margins of the openings 602. Thus in order to openthe compartment the operator would merely grasp the portion 617 and pulltoward himself to disengage the locking lug 619 and 620 and clear theouter side surface 613 of portion 56 and then would swing the element612 from the position shown in FIGS. 14, 15, and 16 to the positionshown in FIG. 11. It will be observed that the compartment serves thefunction of safely storing the excessively long sickle for the unit toaccommodate insertion and withdrawal of the sickle readily in a safe andeconomical manner. In addition the hollow construction of the beam is ofcantilever type minimizing the amount of material used consistent with agood structure.

The brackets mounting the bars each comprise a journal opening 81adjacent to the apex 81' which is formed by the outwardly convergingleading and trailing edges and 95. The leading edge 95 is notched at 97'adjacent to apex 81' to accommodate the bat head 97.

Having described the novel harvesting unit various inventions areapparent and this application is concerned with inventions hereinafterclaimed.

What is claimed is:

1. A pushover bar assembly for a harvester comprising a pair of uprightside panels, said assembly comprising a transverse member and fore andaft extending elongate end members at opposite ends of said transversemember adjacent to respective side panels, and means for extensiblysecuring said end members to respective panels for extension and forvertical swinging movement of said transverse member for elevating andlowering such member and simultaneous fore and aft translationalmovement of such member to selectively attainable positions.

2. The invention according to claim 1 and said securing means comprisingmeans providing a horizontal pivot on the harvester, and locking meansextending through an arcuate slot in the adjacent side panel formovement with the related end member about horizontal axis of pivot andadapted to be locked to said side panel for holding the assembly inlocked selected elevated positions.

3. The invention according to claim 1 and said securing means comprisinga pair of identical reversely arranged clamp elements arranged inclamping position to the related end member.

4. The invention according to claim 3 and each element having a pair ofparallel laterally offset end portions and a transverse portioninterconnecting adjacent edges of said end portions, and the transverseportion of one element disposed at one side of the associated end memberand the transverse portion of the other element disposed at the oppositeside of the associated end member.

5. A pushover bar assembly for a harvester comprising a pair of uprightside panels, said assembly comprising a transverse member and fore andaft extending elongate end members at opposite ends of said transversemember adjacent to respective side panels, and means for securing saidend members to respective panels for vertical swinging movement of saidtransverse member for elevating and lowering such member andsimultaneous fore and aft translational movement of such member toselectively attainable positions, said securing means comprising a pairof identical reversely arranged clamp elements arranged in clampingposition to the related end member, each element having a pair ofparallel laterally oiTset end portions and a transverse portioninterconnecting adjacent edges of said end portions, and the transverseportion of one element disposed at one side of the associated end memberand the transverse portion of the other element disposed at the oppositeside of the associated end member and the end portions at one side ofthe associated end member being offset toward the adjacent side paneland that end portion of the element thereadjacent bears thereagainst anda bolt extending through the end portions offset toward the adjacentside panel and through an opening in such side panel and securing thesame together while clamping said elements against said end member.

6. The invention according to claim 5 and another bolt extending throughsaid end portions of said elements offset toward the adjacent panel at apoint ofiset from the bolt mentioned in claim 5 longitudinal of theassociated end member and extending through an arcuate slot in theadjacent side panel concentric with the axis of pivot of the boltmentioned in claim 5 and having means thereon for securement to saidadjacent panel.

7. The invention according to claim 6 wherein the end portions at theopposite side of the end member are offset and spaced away from theadjacent side panel and provide an accommodation for nut and boltassemblies securing said last mentioned end portions of the brackets.

8. The invention according to claim 3 and each element being generallyrectangular in side elevation and comprising a pair of flat laterallyand planarly offset portions and an arcuate portion interconnecting saidflat portions along their adjacent edges, and said element havingtransverse bolt holes in the corners thereof.

9. The invention according to claim 8 wherein said elements in assembledposition are arranged in mirror image.

I? i t 1

1. A pushover bar assembly for a harvester comprising a pair of uprightside panels, said assembly comprising a transverse member and fore andaft extending elongate end members at opposite ends of said transversemember adjacent to respective side panels, and means for extensiblysecuring said end members to respective panels for extension and forvertical swinging movement of said transverse member for elevating andlowering such member and simultaneous fore and aft translationalmovement of such member to selectively attainable positions.
 2. Theinvention according to claim 1 and said securing means comprising meansprOviding a horizontal pivot on the harvester, and locking meansextending through an arcuate slot in the adjacent side panel formovement with the related end member about horizontal axis of pivot andadapted to be locked to said side panel for holding the assembly inlocked selected elevated positions.
 3. The invention according to claim1 and said securing means comprising a pair of identical reverselyarranged clamp elements arranged in clamping position to the related endmember.
 4. The invention according to claim 3 and each element having apair of parallel laterally offset end portions and a transverse portioninterconnecting adjacent edges of said end portions, and the transverseportion of one element disposed at one side of the associated end memberand the transverse portion of the other element disposed at the oppositeside of the associated end member.
 5. A pushover bar assembly for aharvester comprising a pair of upright side panels, said assemblycomprising a transverse member and fore and aft extending elongate endmembers at opposite ends of said transverse member adjacent torespective side panels, and means for securing said end members torespective panels for vertical swinging movement of said transversemember for elevating and lowering such member and simultaneous fore andaft translational movement of such member to selectively attainablepositions, said securing means comprising a pair of identical reverselyarranged clamp elements arranged in clamping position to the related endmember, each element having a pair of parallel laterally offset endportions and a transverse portion interconnecting adjacent edges of saidend portions, and the transverse portion of one element disposed at oneside of the associated end member and the transverse portion of theother element disposed at the opposite side of the associated end memberand the end portions at one side of the associated end member beingoffset toward the adjacent side panel and that end portion of theelement thereadjacent bears thereagainst and a bolt extending throughthe end portions offset toward the adjacent side panel and through anopening in such side panel and securing the same together while clampingsaid elements against said end member.
 6. The invention according toclaim 5 and another bolt extending through said end portions of saidelements offset toward the adjacent panel at a point offset from thebolt mentioned in claim 5 longitudinal of the associated end member andextending through an arcuate slot in the adjacent side panel concentricwith the axis of pivot of the bolt mentioned in claim 5 and having meansthereon for securement to said adjacent panel.
 7. The inventionaccording to claim 6 wherein the end portions at the opposite side ofthe end member are offset and spaced away from the adjacent side paneland provide an accommodation for nut and bolt assemblies securing saidlast mentioned end portions of the brackets.
 8. The invention accordingto claim 3 and each element being generally rectangular in sideelevation and comprising a pair of flat laterally and planarly offsetportions and an arcuate portion interconnecting said flat portions alongtheir adjacent edges, and said element having transverse bolt holes inthe corners thereof.
 9. The invention according to claim 8 wherein saidelements in assembled position are arranged in mirror image.